12m
    Bornholm, Denmark
    Waters between Lolland and Falster including Rødsand, Guldborg sound, and Bøtø Nor

    SECUNDA

    Best months: Jul–Sep

    Protected Area

    Waters between Lolland and Falster including Rødsand, Guldborg sound, and Bøtø Nor

    Why dive here

    With 66+ marine species recorded in the area - including jellyfish lake - SECUNDA offers some of Bornholm's richest wreck diving. Water ranges 3-18°C, warmest July, August, September.

    Best timeJul–Sep
    WetsuitA 5mm wetsuit
    Marine lifeJellyfish Lake · 66+ species recorded
    Water3-18°C · warmest July, August, September
    CharacterWreck dive · max 12m

    The Secunda, off Bornholm, is one of our favourite wreck dives in the Baltic, mainly because she’s so accessible and has such a clear story. Sitting upright in just 12 metres, you can spend a full hour exploring her. The visibility here can be surprisingly good, especially on a calm morning, letting you take in the whole ship. We love dropping down to see the wheelhouse first, often finding a big cod lurking inside, looking quite territorial. You’ll fin along her deck, past cargo hatches that are now home to colonies of anemones and small blennies. The superstructure is fairly intact, making for some interesting swim-throughs if you're comfortable with confined spaces, just be mindful of loose cables. We’d suggest focusing on the bow and stern, where the most interesting features are – anchors still in place, and the propeller largely clear of the seabed. It’s not a challenging dive, making it perfect for newer wreck divers or those wanting a relaxed dive with a tangible piece of history. Just watch for occasional fishing lines near the shallower parts of the wreck.

    Typical SECUNDA Dive Profile

    5m10mSafety Stop0m12m max~60 min estimated bottom time

    Illustrative profile based on site depth and type. Actual dive profiles vary - always follow your dive computer and training.

    Safety Notes

    Wreck site - avoid penetration without wreck diving certification. Watch for sharp metal and entanglement hazards.

    Cold water this month (avg 14°C). Drysuit or thick wetsuit (7mm+) recommended.

    Always perform a 3-minute safety stop at 5m before surfacing.

    Today06:3217:2510h 53m daylightGolden hour 16:36

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    Conditions

    Ocean conditions, forecast and tides for SECUNDA

    SECUNDA Ocean Conditions

    Monthly averages for SECUNDA, sourced from Open-Meteo marine data - nearest station: Open-Meteo marine grid (54.94, 13.85) (7km away)

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    October Averages

    Sea Temperature

    14°C

    57°F · Range: 11.7–16.3°C

    Air Temperature

    12°C

    53°F

    Wind Speed

    8.16 m/s

    15.9 knots

    Atmospheric Pressure

    1013.3 hPa

    Based on 4 years of monitoring data · Data sources: Open-Meteo marine data

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